Straightway-valve



J. M. GOA'LE. STRAIGHTWAY VALVE.

No. 514,180. Patented Feb. 6, 1894.

iiii ATIONAL umceiumma cuMPmv.

NrTnn STATES PATENT FFICE.

JOSEPH M. OOALE, OF BALTIMORE, MARYLAND.

ST RAIG HTWAY-VALVE.

SPECIFICATION forming part of Letters Patent No. 514,180, dated February6, 189 4.

Applicationfiled January 13,1893. Serial No. 458.198- (No model.)

To aZZ whom it may concern.-

Be' it known that I, J osnrn M. COALE, a citizen of the United States,residing in the city of Baltimore, State of Maryland, have inventedcertain new and useful Improvements in Straightway-Valves, of which'thefollowing is a full, clear, and exact description, reference being had,to the accompanying drawlngs, forming a part of this specification.

My invention relates to straight-way valves, constructed on theprinciple described in my application for patent filed December 20,1892, Serial No. 455,7 55, and consists of novel features in theconstruction of the several parts, and of the combination andarrangement of them, as hereinafter particularly described and pointedout in the claims.

In the accompanying drawings illustrating my present invention, Figure lis a vertical sectional view, through the line a-b of Fig. 2, showingthe valve tight on its seat. Fig. 2 is a plan view with the wheel andjournal box removed, showing by the full lines the position of some ofthe parts when the valve is raised from its seat; and also showing bythe dotted lines the position of the parts when the valve is tight onits seat as in Fig. 1. Fig. 3 is a perspective view of the sleeve andits projecting cam; and Figs. 4, 5, and 6 are side, perspective and endviews respectively, of the retaining device operating in conjunctionwith the sleeve and clutch; and Fig. 7 is a perspective View of asection of the lower end of the valve spindle and top of valve.

The object of my present improvements is, primarily, to combine in asingle device or mechanism, the two separate mechanisms employed in myprevious invention to perform the two, functions of, first, holding thevalve without rotation while it is being raised by the loose sleeve, andsecond, by a subsequent but continuous rotation of the sleeve to clutchthe valve stem to the sleeve and thus rotate the valve. Also, thefurther object of combining ina single device, the cam ring or cap withthe journal forming the stuffing box; and my invention consists ofdevices so constructed and operating, and of the combination andarrangement of these several parts with the spring locking pin thatholds the valve from rotation on the initial movement of the valve stem.

By reference to the description of my previous invention above referredto, the present improvements herein described will be more readilyunderstood.

The casing or shell A is provided, as before, with the usual inlet andoutlet openings A A, and top and bottom central openings VV', the latterhaving preferably a closed bottom L L', of the general shape shown inthe drawings, to afford a guide-bearing for the lower extended end W ofthe valve B, the latter being preferably conical shape as before, andhaving a by-pass opening B.

The casing A is provided with an annular extension A surrounding theupper central opening V; which extension is interiorly screw-thread edon its upper extremity. This extension supports the journal box R andalso forms a chamber A within which the clutch O of the sleeveE and theretaining device D, the spring-controlled pin d, and the cam lug h, arelocated and operated, and also in which the head of the valve B and itsspindle E may rise when the valve is operated.

The valve B is provided with a spindle S screw-threaded on its upper endto register with screw-threads on the interior of a loose sleeve E whichis provided with a square portion e (see Fig. 3) and a screw-threadedend e. The operating wheel F is centrally recessed, and-keyed on thesquare part e of the sleeve E, while the screw-threaded end 6' thereofpassesthrough said recess in the wheel and is secured thereon by the nut6 Between the annular extension A of the casing and the lower surface ofthe wheel hub, is fitted the journal box R which is arranged relativelyto the periphery of the sleeve E as to form a stuffing box Rbetweenthem. The advantage of this construction is that the stuffing box is inclose proximity to the top of the structure so that by simply unscrewingthe nut e the wheel is readily removed, and the stuffing box can bereadily re-packed without disturbing any part of the valve proper or itsoperating mechanism, thus rendering the whole device very much moresimple and efficient.

In my former device above referred to, the valve was held from rotatingon the initial movement of the sleeve and spindle, by means of aspring-controlled rod in the base of the valve, operating in camrecesses in the valve and lower part of the casing. I now substitutetherefor a spring-controlled pin d held in a lateral recess G in thelower extremity of the spindle of the valve. Said pin is held and guidedin and by the part D to which it is affixed. Located on the part D abovesaid pin is formed acam lug h. The pin dis thus controlled in itsmovements by the spring encircling it. The construction is more clearlyshown in Figs. 4 and 5, the former being a side view and the latteraperspective view of the part D, its lug h, and the sliding pin d. Thevalve is held from rotation on the initial movement of the spindle bymeans of the lug h 011 the part D contacting against the clutch on theend of the sleeve E. A cam groove M is formed on the inner wall of theannular extension A of the shell of the valve, the pin d being held insaid groove by the pressure of its encircling spring. On the furthermovement of the spindle, the clutch O on the sleeve E contacts with thelug h on the part D which is moved in an arc of a circle and against thepressure of the spring, and when it reaches the curved edges of thegrooves, the pin is forced back and the lug it enters the slot T in theclutch.

In my former device, the clutching of the wheel with the spindle, afterthe valve had been raised by the initial rotation of its spindle, isaccomplished by a spring-controlled rod and projection in the hub of thewheel, actuated by a cam ring surrounding the sleeve, but in my presentdevice I substitute for these parts, as before described, a cam clutch CT on the end of the sleeve E (shown in detail in Fig. 3), which, actingagainst the lug h of the partD (see Figs. 3 and 1) will, on thecontinued rotation of the sleeve, allow the said lug h to enter therecess T of the cam clutch, and so permit the spindle to be rotated.

In a pending application, Serial No. 455,7 7 5, filed prior hereto, Ihave claimed broadly in claims 1 and 2 thereof, mechanism involving theprinciple of first raising the valve from its seat without rotation, andthen rotating the same by a continued operation of the spindle and itsactuating devices. Hence the same is not claimed herein generically, thepresent application being confined to the several combinations ofmechanism shown and described herein and forming the subject matter ofthe following claims.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In combination, forming a straight way valve, the casing with itsannular grooved extension A the valve and its screw-threaded spindle Slaterally recessed at G, the sleeve E, with its clutch device 0 T, andthe retaining mechanism consisting of the part D, its lug h, andspring-controlled pin d,- said parts being constructed and combinedsubstantially as and for the purpose described.

9. In combination, the shell or casing A, having a central bottom recessL L, and an annular extension A at top, a valve B with a by-pass openingB registering with those of the casing, and carrying a screw-threadedspindle S at its top and having a lower extended end W adapted to beguided in the recess L L of the casing, a sleeve E screwthreaded on itsinterior and with clutch mechanism between the sleeve and spindle saidparts operating to first raise and then rotate the spindle, and ajournal box It mounted in said extension A of the casing and inclosingthe sleeve and its devices which actuate the spindle substantially asdescribed.

3. In combination with the casing provided with an annular extension Agrooved on its interior at M, the valve and its screw-threaded spindle Srecessed at G, of a loose sleeve E Screw-threaded on its upper interiorto register with those on the spindle and provided with a clutch Oslotted at T, and retaining mechanism consisting of the parts D, d, 71.,adapted to operate in the manner and for the purpose set forth.

In testimony whereof I have hereunto aliixed my signature this 9th dayof January, A. D. 1893.

JOSEPH M. COALE.

Witnesses:

GEO. M. DAVIS, J 0s. G. COALE.

